2) Can you tell us what is causing the delay? How complete in the game
A:
We started STALKER development as ordinary FPS, but during the
development process we've integrated too mach new features (some of
them are unique), so we need more time to make everything work
properly. As for the second question: Debugging, balancing - main
things now.
- Q: So level design is done?
A: Yes.

...

11) Right atem, The following are "spoiler" questions, just to feed our passion
i) Witch Jelly in the game?
ii) Will MP-5 made it to the game?

There is no answer to the final question, presumably because Atem lacked the motivation to continue.